Which of the following is/are correctly matched?

Options

A. `underset(NH_(2))underset(|)CH_(2)underset(NH_(2))underset(|)CH_(2)` (Ethylenediamine)
B. `CH_(3)NH_(2)` ..(Methylamine)
C. `H_(2)N-CH_(2)-CH_(2)-NH-CH_(2)-CH_(2)-NH_(2)` (Diethylenetriamine (dien))
D. `underset(CH_(3)-C=N-OH)(CH_(3)-underset(|)C=N-O)H` (Dimethylglyoximate)

Explanation

To determine which of the given compounds are correctly matched with their names, we will analyze each option step by step.

### Step 1: Analyze the first compound (VH2, NH2, NH2)
- **Formula**: VH2, NH2, NH2
- **Name**: Ethylene diamine
- **Analysis**: The compound consists of two amine groups (NH2) attached to an ethylene (C2H4) backbone. Therefore, the correct name is indeed ethylene diamine.
- **Conclusion**: This option is correctly matched.

### Step 2: Analyze the second compound (CH3NH2)
- **Formula**: CH3NH2
- **Name**: Methyl amine
- **Analysis**: The compound consists of a methyl group (CH3) attached to an amine group (NH2). Thus, the correct name is methyl amine.
- **Conclusion**: This option is correctly matched.

### Step 3: Analyze the third compound (NH2CH2CH2NHCH2CH2NH2)
- **Formula**: NH2CH2CH2NHCH2CH2NH2
- **Name**: Diethylene triamine
- **Analysis**: The compound has two ethylene (C2H4) units and three amine (NH2) groups. Therefore, the correct name is diethylene triamine.
- **Conclusion**: This option is correctly matched.

### Step 4: Analyze the fourth compound (CH3C(=O)C(=O)CH3)
- **Formula**: CH3C(=O)C(=O)CH3
- **Name**: Dimethylglyoxymate
- **Analysis**: The compound has two methyl groups (CH3) and is a derivative of glyoxylate. The correct name is dimethylglyoxymate.
- **Conclusion**: This option is correctly matched.

### Final Conclusion:
All four options (A, B, C, and D) are correctly matched with their respective names.